Compton Chamberlayne Beat 3

The River Nadder is the most substantial of the Avon's tributaries, rising at Donhead St Mary and winding through the Wiltshire countryside before reaching the Compton Chamberlayne estate. Beat 3 covers just under 0.4 miles of single-bank main river on this mixed-geology chalk stream — deeply incised, with a series of serpentine bends that slow the flow and create sequences of riffles leading into genuinely deep pools. Classed as a mixed-geology chalk stream, it flows over chalk where the main fishing action takes place but springs to life in the sands and clay beyond, meaning the water carries a faint tinge of colour compared to the Test or Itchen — but it is generally clear enough to spot the fish at which you are casting.

Brown and rainbow trout are present throughout the season, which runs from 18 April to 3 October, with up to six rods on the water. Stocking is heavy, so fish are reliably available, but the beat's character rewards patience and observation rather than blind searching. Fly-only rules apply, with dry fly from the off and nymphing permitted later in the season. The Nadder starts the season well with good hatches of grannom; the main event is always the mayfly, which can be spectacularly good even in poor visibility; and later in the season early morning and evening sedges give the best chance of good sport. The river has a healthy and diverse population of invertebrates with fly hatches throughout the season. A 9-ft to 10-ft rod for a 4- or 5-weight line suits the water well. A fishing hut on the beat provides shelter and a base for the day.